[1] We present the first high resolution, approximately $4 years sample spacing, precipitation record from northeastern Brazil (hereafter referred to as 'Nordeste') covering the last $3000 yrs from 230 Th-dated stalagmites oxygen isotope records. Our record shows abrupt fluctuations in rainfall tied to variations in the intensity of the South Amer-ican… (More)

(2015) Possible relationship between the Earth's rotation variations and geomagnetic field reversals over the past 510 Myr. The Earth's rotation can change as a result of several internal and external processes, each of which is at a different timescale. Here, we present some possible connections between the Earth's rotation variations and the geomagnetic… (More)